http://ipt-uganda.gbif.fr/resource?r=lakevictoriainventory Taxa occurrences and composition of benthic macroinvertebrates from biodiversity surveys on Lake Victoria, Uganda (2001-2006) Willy Gandhi Pabire National Fisheries Resources Research Institute Research technician
Jinja UG
Willy Gandhi Pabire National Fisheries Resources Research Institute Research technician
Jinja UG
labanmusinguzi@firi.go.ug
user 2021-05-24 eng This dataset provides the occurrence, distribution, and abundance or composition of benthic macro-invertebrates collected through various biodiversity surveys conducted on Lake Victoria, Uganda. Occurrence Lake Victoria Uganda Macro-invertebrates GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type.xml Observation GBIF Dataset Subtype Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_subtype.xml This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC) 4.0 License. The dataset covers sites on Lake Victoria, Uganda 31.509 34.146 0.549 -1.055 Aquatic benthic macro-invertebrates class Oligochaeta order Podocopa order Conchostraca family Cordulidae family Ephemeridae family Glossiphoniidae family Leptoceridae family Libellulidae genus Ablabesmyia genus Bellamya genus genus Biomphalaria genus Bulinus genus Byssanodonta genus Caelatura genus Caenis genus Chaoborus genus Chimarra genus Chironomus genus Clinotanypus genus Corbicula genus Cryptochironomus genus Economus genus Neochetina genus Palpomyia genus Procladius genus Sphaerium genus Tanypus genus Tanytarsus species Caridina nilotica species Gabbia humerosa species Melanoides tuberculata species Mutera bourguignat species Povilla adusta asNeeded Laban Musinguzi National Fisheries Resources Research Institute Research officer
Jinja UG
Collection of the macroinvertebrates In the field, sediment samples were collected using a Ponar grab with an open jaw surface area of 238 cm2. At each site, three sediment samples were obtained. The three samples were mixed and concentrated to form one composite sample for each site. Preserving the samples The composite sample for each site was separately preserved in 5% formalin to maintain the organisms in good condition prior to analysis in the laboratory. Identification of macroinvertebrates In the laboratory, formalin was rinsed off from each sample and placed in white flat-bottomed trays. Using pairs of forceps, all benthic macro invertebrates were sorted from the sediment and the individual taxa identified to the lowest possible taxonomic level using appropriate identification keys and a dissecting binocular microscope at 4x 25 magnification. The datasets present data for surveys conducted between 2001 and 2006. The surveys considered several sites along the shoreline of Lake Victoria in Uganda. A Ponar grab with an open jaw area of 238 cm2 was used to take samples of benthic macroinvertebrates. Three spread hauls were taken from each sampling point or site, and mixed to form a composite. The bottom type at each point was described from the grabbed contents. The composite sample was concentrated and then placed in labeled sample bottles and preserved with 5% formalin solution and taken for laboratory analysis. In the laboratory, each sample was rinsed with water and then placed on a white flat-bottomed tray. Macro-invertebrates were sorted, and individual taxa identified to the lowest possible taxonomic level using identification keys (Mandahl-Barth, 1954), Pennak, 1953), Merritt and Cummins, 1997, De Moor et al. 2003). All taxa were recorded, and individuals of each taxon enumerated to estimate their densities. The samples were immediately processed in the field and treated with formalin to keep the organisms of interest intact. To avoid loss of organisms during sample processing, nets with appropriate mesh sizes were used.
2021-05-24T04:35:07.324+00:00 dataset Gandhi Pabire W (2021): Taxa occurrences and composition of benthic macroinvertebrates from biodiversity surveys on Lake Victoria, Uganda (2001-2006). v1.1. National Fisheries Resources Research Institute. Dataset/Occurrence. http://ipt-uganda.gbif.fr/resource?r=lakevictoriainventory&v=1.1 De Moor IJ, Day JA and de Moor FC (Eds) (2003b) Guide to Freshwater Invertebrates of South Africa. Vol. 8: Insect II. Hemiptera, Megaloptera, Neuroptera, Trichoptera & Lepidoptera, 208Pg. Mendahl-Barth, G. (1954). The Freshwater Mollusks of Uganda and Adjacent Territories. Annls Mus. r. Congo Belge, 8°, Zoology, 32: 1–206. Merritt, R. W., & Cummins, K. W. (1997). An introduction to the aquatic insects of North America (3rd ed.). Dubuque: Kendall/Hunt Publishing Co. 720 Pg. Pennak, R.W. 1953. Fresh-water Invertebrates of the United States. John Wiley & Sons, New York. 769pg. Pennak, R. W, (1953). Fresh-water invertebrates of the United States. 2th Edition, John Wiley & Sons, New York, 803 Pages. 2001-2006 http://ipt-uganda.gbif.fr/resource?id=lakevictoriainventory/v1.1.xml